Below are some helpful Internet resources on this topic. Mayo Clinic does not own or control any of these sites and is not responsible for their content. Inclusion of these sites does not imply endorsement by Mayo Clinic.
www.gastro.org
The American Gastroenterological Association
www.acg.gi.org
The American College of Gastroenterology
www.ccfa.org
Crohn's & Colitis Foundation of America, Inc.
MEDLINEplus, National Library of Medicine
www.niddk.nih.gov
National Digestive Diseases Information Clearinghouse